PF is calculated according to the voltage, current, as shown in the above formula. In the design of the traditional AC electronic load, it is assumed that the voltage waveform is a sine wave, as shown in Figure 13, but this is not the case, because the voltage waveform will be distorted due to load, as shown in Figure 14. If the power factor is controlled by the sine wave voltage, the power factor is lower than the set value of the user, so the voltage of the sample will be a phenomenon of the stress.
63800 series AC load will monitor the reading value of the power factor at any time, and use the read value to dynamically adjust the load waveform. So,The setting of the power factor can be quite accurate, and it will not allow the phenomenon of the stress to be measured.
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